Case study - One application of automated traveltime tomography using early-arrival Gaussian packets in deep-water Gulf of Mexico

摘要

Multivessel circular shooting (dual-coil) acquisition, with full-azimuth and long-offset coverage, has significantly improved our capability to image complex subsalt structures by providing better subsurface illumination (Moldoveanu et al., 2009). Furthermore, the long-offset and full-azimuth data provide extremely valuable early-arrival energies, including diving wave, head wave, and large angle reflections, for velocity inversion and anisotropy analysis. Our method (Tang et al., 2014), automated traveltime tomography using early-arrival Gaussian packets, can correctly model these early-arrival energies and use them in inversion. In this paper, we use a circular shooting dataset to demonstrate this method.